CN108069666A - A kind of big aggregate hybrid fiber graduation two concrete and preparation method - Google Patents
A kind of big aggregate hybrid fiber graduation two concrete and preparation method Download PDFInfo
- Publication number
- CN108069666A CN108069666A CN201810102708.6A CN201810102708A CN108069666A CN 108069666 A CN108069666 A CN 108069666A CN 201810102708 A CN201810102708 A CN 201810102708A CN 108069666 A CN108069666 A CN 108069666A
- Authority
- CN
- China
- Prior art keywords
- aggregate
- concrete
- steel fibre
- graduation
- coarse aggregate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/48—Metal
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0048—Fibrous materials
- C04B20/0052—Mixtures of fibres of different physical characteristics, e.g. different lengths
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
- C04B20/0096—Fillers with bimodal grain size distribution
Abstract
The invention discloses a kind of big aggregate hybrid fiber graduation two concrete and preparation method, concrete includes cementitious material, steel fibre, coarse aggregate, fine aggregate and water, and the steel fibre uses the steel fibre of different length, and the coarse aggregate uses graduation two coarse aggregate；Preparation method comprises the following steps：(1) cement, steel fibre, coarse aggregate, fine aggregate and water are taken according to proportioning, the steel fibre of 60mm length is put into after disperseing in the water of weighing and taken out；(2) by after the coarse aggregate of weighing, fine aggregate and cement mixing 1min, the steel fibre of two kinds of different lengths is added in while stirring, is stirring evenly and then adding into the water of weighing, is continued after stirring 1min, is obtained big aggregate hybrid fiber graduation two concrete.Preparation process of the present invention is simple, and the graduation two concrete prepared has higher intensity and toughness.
Description
Technical field
The present invention relates to technical field of concrete in hydraulic engineering, more particularly to a kind of big aggregate hybrid fiber graduation two
Concrete and preparation method.
Background technology
Streamflow regime and its complicated and changeable in hydraulic engineering, some positions of hydraulic structure continue to suffer from High Speed Turbulent work
With the inside of these High Speed Turbulents is made of the numerous moving whirlpool to differ in size.Whirlpool is except with the total of current
It outside trend is moved to a direction, also rotates, shake, each particle of current is also with vortex movement, rotation, concussion.Meanwhile
The strong turbulent fluctuation of current particle just generates flow velocity and the strong pulsation of dynamic hydraulic pressure.This causes High Speed Turbulent to some of hydraulic structure
Position have stronger impact, scour, abrasion, it is impervious the problems such as, especially when in current mixed with silt, problem becomes more to dash forward
Go out.To improve the agent on crack resistance of concrete erosion at these positions, wear-resistant, impact resistance, increase the intensity and toughness of concrete, in water
Building in sharp engineering etc. is needed using special concrete.
Steel fiber reinforced concrete is uniformly, to be disorderly distributed in short thin steel fibre in concrete substrate and the modification of formation to ground
Concrete material.The incorporation of steel fibre can improve the ductility and toughness of concrete, mechanical property and deformation to concrete structure
The improvement of ability is clearly.However at present, it is little that maximum size of coarse aggregate is concentrated mainly on to the research of steel fiber reinforced concrete
In the crushed stone concrete of 25mm, the intensity of the concrete prepared in the engineering for needing intensity larger using the aggregate of this grain size
It is smaller, it can not ensure the intensity of engineering, in order to obtain the concrete of higher intensity, select the aggregate of greater particle size, such as two level
With aggregate, graduation three aggregate even four graded aggregates；But after the grain size of aggregate is more than 40mm, since the specific surface area of aggregate subtracts
Small, the unevenness increase of component in concrete, the concrete of preparation also has poor workability, easily generates isolation, simultaneously
The reduction of the intensity of concrete can also be made.
Therefore, it is necessary to the prior art is improved to solve above-mentioned technical problem.
The content of the invention
In view of this, it is an object of the invention to provide a kind of big aggregate hybrid fiber graduation two concrete and preparation sides
Method, the concrete for making is simple for process, and the graduation two concrete prepared has higher intensity and toughness, in hydraulic engineering
With Anti-erosion, wear-resistant, shock proof effect.It is realized in particular by following technical scheme：
The present invention a kind of big aggregate hybrid fiber graduation two concrete, including cementitious material, steel fibre, coarse aggregate,
Fine aggregate and water, the steel fibre use the steel fibre of different length, and the coarse aggregate uses graduation two coarse aggregate.
Further, the gel rubber material uses cement.
Further, per 1m3Concrete includes following components according to parts by weight：
360~394kg of cement, 39~94kg of steel fibre, 1023~1108kg of coarse aggregate, 685~703kg of fine aggregate, water
209~228kg.
Further, per 1m3Concrete includes following components according to parts by weight：
370~390kg of cement, 50~85kg of steel fibre, 1035~1090kg of coarse aggregate, 688~695kg of fine aggregate, water
215~225kg.
Further, per 1m3Concrete includes following components according to parts by weight：
Cement 384kg, steel fibre 80kg, coarse aggregate 1047kg, fine aggregate 690kg, water 223kg.
Further, the thick bone that the coarse aggregate that grain size is 5~20mm in the graduation two coarse aggregate is 20~40mm with grain size
The mass ratio of material is 45:55.
Further, the length of the steel fibre uses the matter of 60mm and 31.5mm, 60mm steel fibre and 31.5mm steel fibres
Amount is than being 4:1.
The invention also discloses the preparation method of above-mentioned big aggregate hybrid fiber graduation two concrete, including following step
Suddenly：
(1) cement, steel fibre, coarse aggregate, fine aggregate and water are taken according to proportioning, the steel fibre of 60mm length is put into weighing
Water in disperse after take out；
(2) by after the coarse aggregate of weighing, fine aggregate and cement mixing 1min, the steel of two kinds of different lengths is added in while stirring
Fiber is stirring evenly and then adding into the water of weighing, continues after stirring 1min, obtains big aggregate hybrid fiber graduation two concrete.
Beneficial effects of the present invention：The present invention is used coarse aggregate of the maximum particle diameter for 40mm, is collected using graduation two coarse aggregate
The total surface area of material reduces, and cement consumption is greatly reduced, so as to reduce project cost；Using length be respectively 60mm and
Two kinds of steel fibre blendings of 31.5mm, the coupling that can not only be played between length of steel fiber and graduation two coarse aggregate size are made
With, additionally it is possible to the confounding effect between different length steel fibre is played, so as to improve the toughness of concrete, meets concrete for hydraulic structure
Requirement of the Structural Engineering to toughness；Other advantageous effects of the present invention will be combined and carried out further in embodiment in detail below
It is bright.
Specific embodiment
Big aggregate hybrid fiber graduation two concrete in the present embodiment, including cementitious material, steel fibre, coarse aggregate, thin
Aggregate and water, the steel fibre use the end hook type steel fibre of different length, and end hook type steel fibre can increase steel fibre with mixing
The cohesive force of soil is coagulated, so as to increase the compression strength of concrete, and the end hook shape fiber mixed in concrete cracking can also
Ensure that concrete has good intensity, so as to ensure the security performance of engineering, the coarse aggregate uses graduation two coarse aggregate,
Middle coarse aggregate uses ordinary gravel, and graduation two coarse aggregate is the coarse aggregate that grain size is 5~20mm and grain size is the thick of 20~40mm
The mixture of aggregate, fine aggregate use modulus of fineness for 2.89 natural river sand.
The present invention uses graduation two coarse aggregate, uses maximum particle diameter as the coarse aggregate of 40mm, and the total surface area gathered materials reduces,
Cement consumption is greatly reduced, so as to reduce project cost；Two kinds of different length steel fibre blendings can not only play steel fibre
Tie up the coupling between length and graduation two coarse aggregate size, additionally it is possible to play and mix effect between different length steel fibre
Should, so as to improve the toughness of concrete, meet requirement of the Hydro-concrete Structures engineering to toughness.
In the present embodiment, the gel rubber material uses cement, and cement is 42.5 Portland cements of P.O.
Cement can harden in air but also in water, keep and develop its intensity；Using the ordinary silicon of 42.5 grades
Acid salt cement intensity is high, drying shrinkage is small, wearability is preferable, carbonization resistance is preferable and High anti bending strength, and Portland cement
Hydration reaction speed, therefore the heat of hydration is larger, has good frost resistance, can apply in hydraulic engineering, play
Good cryoprotective effects.
In the present embodiment, per 1m3Concrete includes following components according to parts by weight：
360~394kg of cement, 39~94kg of steel fibre, 1023~1108kg of coarse aggregate, 685~703kg of fine aggregate, water
209~228kg.
In the present embodiment, per 1m3Concrete includes following components according to parts by weight：
370~390kg of cement, 50~85kg of steel fibre, 1035~1090kg of coarse aggregate, 688~695kg of fine aggregate, water
215~225kg.
In the present embodiment, per 1m3Concrete includes following components according to parts by weight：
Cement 384kg, steel fibre 80kg, coarse aggregate 1047kg, fine aggregate 690kg, water 223kg.
The concrete prepared according to proportioning has good intensity and toughness, the coupling between steel fibre and coarse aggregate
The toughness and intensity of concrete are improved, adding in fine aggregate in concrete contributes to concrete even closer solid, mixed so as to extend
The service life of soil is coagulated, cost is not only saved, but also can ensure the security using the concrete works.
In the present embodiment, grain size is 5~20mm in the graduation two coarse aggregate coarse aggregate and grain size are 20~40mm's
The mass ratio of coarse aggregate is 45:55.
Graduation two coarse aggregate can enhance the intensity of the concrete of preparation, the big grain size and small particle in coarse aggregate it is suitable
Proportioning can reduce the porosity of concrete, can not only reduce the usage amount of cement, reduce cost, and preparation can be made
Concrete it is uniform, shaping it is closely knit.
In the present embodiment, for the length of the steel fibre using 60mm and 31.5mm, wherein length is the type of 60mm steel fibres
Number for RC80/60-BN, a diameter of 0.75mm, draw ratio 80, tensile strength 1100MPa；Length is the type of 31.5mm steel fibres
Number for CW04-0.75/31.5, a diameter of 0.75mm, draw ratio 42, tensile strength 1100MPa；60mm steel fibres and 31.5mm
The mass ratio of steel fibre is 4:1.
Steel fibre uniformly, is disorderly distributed in ground in concrete, can improve the tensile strength and toughness of concrete, steel fibre
Major diameter it is bigger when, the tensile strength of concrete can be improved, while the mobility of concrete reduces, the draw ratio of steel fibre
When smaller, thus it is possible to vary the mobility of concrete, the steel fibre synergistic effect of two kinds of different draw ratios can both improve concrete
Tensile strength, the mobility that will not make concrete is too small, prevents concrete from phenomena such as honeycomb, pitted skin occur；Two kinds of differences
The steel fibre of length cooperates in concrete, plays confounding effect, can greatly improve the intensity of concrete；When 60mm steel
The mass ratio of fiber and 31.5mm steel fibres is 4:When 1, the intensity of concrete can be increased to greatest extent.
In the present embodiment, the preparation method of the big aggregate hybrid fiber graduation two concrete comprises the following steps：
(1) cement, steel fibre, coarse aggregate, fine aggregate and water are taken according to proportioning, length is that the steel fibre of 60mm is in a row
, the steel fibre that length is 60mm is put into after disperseing in the water of weighing and taken out, for use；
(2) by after the coarse aggregate of weighing, fine aggregate and cement mixing 1min, the steel of two kinds of different lengths is added in while stirring
Fiber is stirring evenly and then adding into the water of weighing, continues after stirring 1min, obtains big aggregate hybrid fiber graduation two concrete.
The preparation process is simple, and harsh external condition is not required, it is not required that more instrument, you can prepares with good
The concrete of eager to do well in everything degree and toughness can not only reduce engineering cost, and ensure the intensity and security performance of engineering.
The specific preparation process of the big aggregate hybrid fiber graduation two concrete and concrete standard maintenance of preparation is laggard
Row bent toughness is tested, specifically as shown in embodiment 1 to embodiment 9：
Embodiment 1
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 360kg, length are the steel fibre of 60mm
31.2kg, length are 31.5mm steel fibre 7.8kg, and grain size is the coarse aggregate 460.35kg of 5~20mm, and grain size is 20~40mm's
Coarse aggregate 562.65kg, fine aggregate 685kg, water 209kg, length are that the steel fibre of 60mm is rows of, put it into weighing
In water, it is made to scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
Embodiment 2
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 360kg, length are the steel fibre of 60mm
53.2kg, length are 31.5mm steel fibre 13.3kg, and grain size is the coarse aggregate 479.48kg of 5~20mm, and grain size is 20~40mm
Coarse aggregate 586.02kg, fine aggregate 694kg, water 218.5kg, length be 60mm steel fibre be rows of, put it into title
In the water of amount, it is made to scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
Embodiment 3
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 360kg, length are the steel fibre of 60mm
75.2kg, length are 31.5mm steel fibre 18.8kg, and grain size is the coarse aggregate 498.6kg of 5~20mm, and grain size is 20~40mm's
Coarse aggregate 609.4kg, fine aggregate 703kg, water 228kg, length are that the steel fibre of 60mm is rows of, put it into the water of weighing
In, it is made to scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
Embodiment 4
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 377kg, length are the steel fibre of 60mm
31.2kg, length are 31.5mm steel fibre 7.8kg, and grain size is the coarse aggregate 460.35kg of 5~20mm, and grain size is 20~40mm's
Coarse aggregate 562.65kg, fine aggregate 685kg, water 209kg, length are that the steel fibre of 60mm is rows of, put it into weighing
In water, it is made to scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
Embodiment 5
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 384kg, length are the steel fibre 64kg of 60mm,
Length is 31.5mm steel fibre 16kg, and grain size is the coarse aggregate 471kg of 5~20mm, and grain size is the coarse aggregate of 20~40mm
576kg, fine aggregate 690kg, water 223kg, length are that the steel fibre of 60mm is rows of, put it into the water of weighing, make it
It scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
Embodiment 6
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 377kg, length are the steel fibre of 60mm
75.2kg, length are 31.5mm steel fibre 18.8kg, and grain size is the coarse aggregate 498.6kg of 5~20mm, and grain size is 20~40mm's
Coarse aggregate 609.4kg, fine aggregate 703kg, water 228kg, length are that the steel fibre of 60mm is rows of, put it into the water of weighing
In, it is made to scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
Embodiment 7
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 394.00kg, length are the steel fibre of 60mm
31.20kg, length are 31.5mm steel fibre 7.8kg, and grain size is the coarse aggregate 460.35kg of 5~20mm, and grain size is 20~40mm
Coarse aggregate 562.65kg, fine aggregate 685kg, water 209kg, length be 60mm steel fibre be rows of, put it into weighing
Water in, it is made to scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
Embodiment 8
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 394kg, length are the steel fibre of 60mm
53.2kg, length are 31.5mm steel fibre 13.3kg, and grain size is the coarse aggregate 479.48kg of 5~20mm, and grain size is 20~40mm
Coarse aggregate 586.02kg, fine aggregate 694kg, water 218.5kg, length be 60mm steel fibre be rows of, put it into title
In the water of amount, it is made to scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
Embodiment 9
The preparation method of the big aggregate hybrid fiber graduation two concrete, comprises the following steps：
(1) per 1m3Concrete takes following components according to parts by weight：Cement 394kg, length are the steel fibre of 60mm
75.2kg, length are 31.5mm steel fibre 18.8kg, and grain size is the coarse aggregate 498.6kg of 5~20mm, and grain size is 20~40mm's
Coarse aggregate 609.4kg, fine aggregate 703kg, water 228kg, length are that the steel fibre of 60mm is rows of, put it into the water of weighing
In, it is made to scatter, for use；
(2) after the steel fibre that length is 60mm disperses, take out, the coarse aggregate, fine aggregate and cement of weighing are stirred
1min, then side stirring, side adds in two kinds of steel fibres, treats that it stirs evenly Hou Jiashui, be stirred for 1min, obtain big aggregate and mix
Steel fibre graduation two concrete.
Obtained concrete is subjected to standard curing, after the completion of maintenance, reference《Fiber concrete test method standard》
(CECS13：2009) bent toughness test, obtained Bending toughness index and flexural tensile strength, specific performance such as 1 institute of table, are carried out
Show.
1 embodiment 1 of table is strong to the Bending toughness index of 9 big aggregate hybrid fiber graduation two concrete of embodiment and curved drawing
The performance parameter of degree.
| Bending toughness index I5 | Bending toughness index I10 | Bending toughness index I20 | Flexural tensile strength (MPa) | |
| Embodiment 1 | 3.84 | 7.51 | 14.31 | 4.18 |
| Embodiment 2 | 3.96 | 7.21 | 14.98 | 4.41 |
| Embodiment 3 | 4.01 | 8.16 | 16.27 | 4.53 |
| Embodiment 4 | 3.94 | 7.94 | 15.18 | 4.24 |
| Embodiment 5 | 4.18 | 8.42 | 17.11 | 4.46 |
| Embodiment 6 | 4.21 | 8.27 | 16.38 | 4.60 |
| Embodiment 7 | 4.07 | 8.34 | 15.96 | 4.28 |
| Embodiment 8 | 4.19 | 8.52 | 16.88 | 4.55 |
| Embodiment 9 | 4.30 | 8.73 | 17.23 | 4.71 |
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail in good embodiment, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and scope of technical solution of the present invention, should all be covered at this
Among the right of invention.
Claims (8)
1. a kind of big aggregate hybrid fiber graduation two concrete, it is characterised in that：Including cementitious material, steel fibre, coarse aggregate,
Fine aggregate and water, the steel fibre use the steel fibre of different length, and the coarse aggregate uses graduation two coarse aggregate.
2. big aggregate hybrid fiber graduation two concrete according to claim 1, it is characterised in that：The gel rubber material
Using cement.
3. big aggregate hybrid fiber graduation two concrete according to claim 2, it is characterised in that：Per 1m3Concrete,
Include following components according to parts by weight：
360~394kg of cement, 39~94kg of steel fibre, 1023~1108kg of coarse aggregate, 685~703kg of fine aggregate, water 209~
228kg。
4. big aggregate hybrid fiber graduation two concrete according to claim 3, it is characterised in that：Per 1m3Concrete,
Include following components according to parts by weight：
370~390kg of cement, 50~85kg of steel fibre, 1035~1090kg of coarse aggregate, 688~695kg of fine aggregate, water 215~
225kg。
5. big aggregate hybrid fiber graduation two concrete according to claim 4, it is characterised in that：Per 1m3Concrete,
Include following components according to parts by weight：
Cement 384kg, steel fibre 80kg, coarse aggregate 1047kg, fine aggregate 690kg, water 223kg.
6. big aggregate hybrid fiber graduation two concrete according to claim 5, it is characterised in that：The graduation two is thick
The mass ratio for the coarse aggregate that the coarse aggregate that grain size is 5~20mm in aggregate is 20~40mm with grain size is 45:55.
7. big aggregate hybrid fiber graduation two concrete according to claim 6, it is characterised in that：The steel fibre
Length is 4 using the mass ratio of 60mm and 31.5mm, 60mm steel fibre and 31.5mm steel fibres:1.
8. a kind of preparation method of the big aggregate hybrid fiber graduation two concrete of claim 1~7 any one of them, special
Sign is：Comprise the following steps：
(1) cement, steel fibre, coarse aggregate, fine aggregate and water are taken according to proportioning, the steel fibre of 60mm length is put into the water of weighing
In disperse after take out；
(2) it is the steel for after the coarse aggregate of weighing, fine aggregate and cement mixing 1min, adding in two kinds of different lengths while stirring is fine
Dimension is stirring evenly and then adding into the water of weighing, continues after stirring 1min, obtains big aggregate hybrid fiber graduation two concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102708.6A CN108069666A (en) | 2018-02-01 | 2018-02-01 | A kind of big aggregate hybrid fiber graduation two concrete and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102708.6A CN108069666A (en) | 2018-02-01 | 2018-02-01 | A kind of big aggregate hybrid fiber graduation two concrete and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108069666A true CN108069666A (en) | 2018-05-25 |
Family
ID=62157201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810102708.6A Pending CN108069666A (en) | 2018-02-01 | 2018-02-01 | A kind of big aggregate hybrid fiber graduation two concrete and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108069666A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321476A (en) * | 2021-05-25 | 2021-08-31 | 柳州欧维姆结构检测技术有限公司 | Early-strength type ultrahigh-performance concrete capable of being constructed at negative temperature and preparation method thereof |
| CN113636817A (en) * | 2021-08-30 | 2021-11-12 | 西京学院 | Concrete containing recycled PVC aggregate and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325465A (en) * | 1998-11-03 | 2001-12-05 | 格雷斯公司 | Fiber reinforced cementitious materials with improved toughness and ductility |
| CN103964787A (en) * | 2014-05-09 | 2014-08-06 | 合肥工业大学 | Concrete with large doped quantity of mixed steel fibers and preparing method |
| CN104446228A (en) * | 2014-12-23 | 2015-03-25 | 苏州万盛混凝土有限公司 | Preparation method of concrete with high fire resistance |
| KR20170028056A (en) * | 2015-09-03 | 2017-03-13 | 서울대학교산학협력단 | Composition of high strength concrete having superior cut-off resistance |
-
2018
- 2018-02-01 CN CN201810102708.6A patent/CN108069666A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325465A (en) * | 1998-11-03 | 2001-12-05 | 格雷斯公司 | Fiber reinforced cementitious materials with improved toughness and ductility |
| CN103964787A (en) * | 2014-05-09 | 2014-08-06 | 合肥工业大学 | Concrete with large doped quantity of mixed steel fibers and preparing method |
| CN104446228A (en) * | 2014-12-23 | 2015-03-25 | 苏州万盛混凝土有限公司 | Preparation method of concrete with high fire resistance |
| KR20170028056A (en) * | 2015-09-03 | 2017-03-13 | 서울대학교산학협력단 | Composition of high strength concrete having superior cut-off resistance |
Non-Patent Citations (1)
| Title |
|---|
| 石国柱等: "二级配骨料钢纤维混凝土断裂性能研究", 《混凝土》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321476A (en) * | 2021-05-25 | 2021-08-31 | 柳州欧维姆结构检测技术有限公司 | Early-strength type ultrahigh-performance concrete capable of being constructed at negative temperature and preparation method thereof |
| CN113636817A (en) * | 2021-08-30 | 2021-11-12 | 西京学院 | Concrete containing recycled PVC aggregate and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106517957B (en) | A kind of regular tenacity high elastic modulus concrete and preparation method thereof | |
| US8951343B2 (en) | Ultra high performance concrete reinforced with low-cost graphite nanomaterials and microfibers, and method for production thereof | |
| CN107265966B (en) | It is a kind of to prepare bridge self-compaction cracking resistance clear-water concrete using high fine powder content Machine-made Sand | |
| CN105948660A (en) | High-strength ultra-high-toughness concrete and preparation method thereof | |
| Guo et al. | Preparation of TiO2/epoxy resin composite and its effect on mechanical and bonding properties of OPC mortars | |
| CN106278026B (en) | A kind of cement-base composite material and preparation method thereof | |
| CN100434382C (en) | Plastic anti-crack modified fiber of cement-based material and prepn. process | |
| CN107117856B (en) | Pure pulvis pervious concrete reinforcing agent and its application method with nano enhancement | |
| CN103626444A (en) | Construction process of steel fiber shotcrete | |
| CN110028285A (en) | A kind of ultra-high performance concrete and preparation method thereof improving Steel Bridge Deck rigidity | |
| Hosseini et al. | Use of nano-SiO 2 to improve microstructure and compressive strength of recycled aggregate concretes | |
| CN107043236A (en) | A kind of lightweight aggregate concrete and preparation method thereof | |
| CN110550914A (en) | high-strength concrete and preparation method thereof | |
| CN102079647A (en) | Basalt fiber reinforced cement matrix composite and preparation method thereof | |
| CN111439977A (en) | Impact-resistant basalt fiber reinforced concrete and preparation method thereof | |
| CN109095862A (en) | A kind of high-strength tenacity concrete | |
| CN107572981A (en) | A kind of concrete repair self-compacting concrete and preparation method thereof | |
| CN109809778A (en) | Super hardening modified PVA fiber reinforcement sea sand cement-base composite material and preparation method thereof | |
| CN106699039A (en) | Building 3D printing ink and use thereof | |
| CN109809774A (en) | A kind of assorted fibre slag is for sand concrete and preparation method thereof | |
| CN113651583A (en) | High-strength high-toughness anti-abrasion concrete and preparation method thereof | |
| CN109942257A (en) | A kind of road superhigh tenacity cement-base composite material and its preparation method and application | |
| CN106554169A (en) | A kind of haydite potting resin mineral composite and preparation method thereof | |
| CN110204281A (en) | A kind of assorted fibre modified rubber concrete and preparation method thereof | |
| CN113307573A (en) | Steel fiber unidirectionally-distributed ultrahigh-performance concrete material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180525 |
|
| RJ01 | Rejection of invention patent application after publication |